Page 9 MNVCSM42A_1511_EN
3.4.2.2 Selecting the protocol for communication with the keyboards
Switch off the matrix by disconnecting the power supply jack
Remove the screws fastening down the cover and open the matrix, following the instructions given in section 3.4.1
Find and set the dip-switches according to the table below
Close the cover and fasten it with the screws
Connect the power supply jack to switch the matrix back on.
Note: all changes to the dip-switches are recognised when the matrix is restarted
Dip switch
1 2 3 4 Protocol and baud rate Connected keyboards
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
ON
Macro, 38400 baud (*)
Macro, 19200 baud
Macro, 9600 baud
Macro, 1200 baud
New series keyboards:
DCJ, DCK, DCTEL, DCBD, DCT, DCIR
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
Linxs, 9600 baud
Linxs, 1200 baud
Linxs series keyboards:
LXRPK12, LXRPK23, LXRPRC36
OFF
OFF
ON
ON
ON
ON
OFF
ON
Videotec switchers, 9600
baud
Videotec switchers, 1200
baud
Previous series keyboards:
SWC4, SWC8, DCMT8 with interface
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
Videotec OSM, 9600 baud
Videotec OSM, 1200 baud
Previous series keyboards:
DCS2, KEYPLUS, SWC16 with interface
ON OFF ON OFF Videotec SW328, 9600 baud Previous series keyboard: DCS3
ON
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
OFF
ON
OFF
ON
Invalid configurations
-
(*)Default configuration
3.4.3 Inserting the load on the AUX line
To insert/disconnect the 120 Ohm load on the RS485 AUX line, position jumper J5 as shown in the
diagram:
3.4.4 Setting 75 Ohm video input termination
It’s possible to remove the 75 Ohm video input termination putting the corresponding jumper into position B.
Example: all input with 75 Ohm load inserted
Jumper J5 with load connected (position A)
Jumper J5 with load disconnected (position B)
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